Converter Board Enables Hot-Plug and Power Loss Protection for M.2 SSDs
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Solution Overview
Problem
M.2 solid state drives lack support for hot-plug and power loss protection (PLP), which are features available with U.2 connectors, limiting their serviceability and reliability in enterprise and data center systems.
Innovation Solution
A component carrier with a converter board that couples M.2 solid state drives to a U.2 connector, incorporating a PCIe clock buffer to generate clock sources and capacitors for backup power, enabling hot-plug and power loss protection by implementing a Flush Cache command during power interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If M.2 solid state drives are used, then cost-effectiveness and performance are improved, but hot-plug support and power loss protection are lost
Solution Approach 1:
A converter board is introduced as an intermediary component between the M.2 solid state drive and the U.2 connector. The converter board includes a U.2 connector that interfaces with the host system, an M.2 connector that interfaces with the solid state drive, and power loss protection circuitry that bridges the two interfaces. This intermediary enables M.2 drives to access hot-plug and power loss protection capabilities through the converter board without requiring changes to the drive itself.
2Use of energy by moving object
If M.2 solid state drives are used, then power consumption is reduced, but serviceability and reliability in enterprise systems deteriorate
Solution Approach 1:
The converter board serves as a mediator that preserves the low power consumption characteristics of M.2 drives while providing enterprise-grade serviceability features. The board includes hot-plug circuitry that enables safe insertion and removal of drives in powered systems, and power loss protection circuitry that maintains data integrity during power interruptions, all while keeping the drive interface compatible with low-power M.2 connectors.
Data Source
AI summary
A component carrier with a housing and a converter board disposed within the housing. The converter board including a U.2 connector, an M.2 connector configured to receive an M.2 solid state drive having a cache memory, and a capacitor. The capacitor provides backup power for a power loss protection system allowing flush cache storage. The housing configured to receive one or more M.2 solid state drives coupled with the converter board.